os/unistd

chdir(String) → Int

dup2(Int, Int) → Int

execv(String, String *) → Int

execvp(String, String *) → Int

execve(String, String *, String *) → Int

fileno(FILE *) → Int

fork() → Int

pipe(arg: Int *) → Int

PIPE_BUF → Int

STDOUT_FILENO → Int

STDERR_FILENO → Int